Planer and cutter head.



J. HEGGEN.

PLANER AND CUTTER HEAD.

APPLICATION FILED JUNE 25. 19 .7.

Patented June 3, 1919,

3 SHEETS-SHEET INVENTOR Ubmv HEGaE/v J. HEGGEN.

PLANER AND CUTTER HEAD.

APPLICATION FILED JUNE 25; x917.

' 1,305,650. Patented June 3,1919.

3 SHEETS-SHEET 2- N VE N TOR BY Ag-w W 14 A TTORNEKS J. HEGGEN.

PLAN'ER AND CUTTER HEAD.

APPLICATION FILED JUNE 25. I917.

I 1,305,650. Patented Ju ne 3,1919.

3 SHEETS-SHEET 3.

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PLANER AND CUTTER, HEAD.

Specification of Letters Patent.

Patented June 3, 1919.

Application filed June 25, 1917. Serial No. 176,895.

To all whom it may concern:

Be it known that I, JOHN Hnccnm-a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented a new and useful Improvement in Planer and Cutter Heads, of which the following is a specification.

This invention relates to improvements in planer and cutter heads and more particularly to improvements in means for securing the knives or blades in such heads, and the.

object of this improvement is to provide means whereby blades of various shapes and forms for performing different classes of ception of knives of various shape and form.

The jigs are slotted in various ways for the reception of the knives and all of such jigs are adapted to clamp the knives tightly when stud bolts that are Provided therein are expanded or screwed outwardly against.

. the walls of the recesses in the cutter heads.

The chip breaks are constructed integral with the jigs so that when such chip breaks become worn new jigs having new chip breaks thereon may be substituted at arelatively small cost.

The invention consists in the novel con struction, adaptation and combination of blade clampino jigs and cutter heads, as will be more cleaf'ly hereinafter described and claimed.

In the drawings Figure 1 is a view in end elevation of a planer head constructed in accordance with this invention; Fig. 2 is a view in side elevation of thesame, the lower portion thereof being broken away; Fig. 3

is a detached view in elevation of a blade jig for a planer head, certain partsbeing broken away- Fig. 6 is a view sectional perspective 9;. thegig shown in Fig. 51g. '2'

is a view in elevation of a modified form of clamping jig for a planer head; Fig. 8 is a view in cross section on broken line 8, S'of Fig. 7 Fig. 9 is a view in end elevation of a cutter or matcher head embodying this invention, a portion thereof being broken away; Fig. 10 is a view in side elevation of the head shown in- Fig. 9 and Figs. 11, 12, 13, 14, 15 and 16 are views in perspective of various forms of knives that may be used in the cutter or matcher head.

' Referring to the drawings throughout which like reference numerals indicate like parts, the numeral 1 indicates a cylindrically formed planer head that is provided with longitudinally extending peripheral re cesses 2. for the reception of blade clamping jigs 3.

The recesses 2 have rear walls 4 that are inclined forwardly and front walls 5' that are inclined slightly to the rear and are slotted lengthwise as at 6 for the reception of the heads of stud bolts 7 by the use of which the jigs are securely clamped in the heads and the blades are clamped in the jigs.

The stud bolts are screwed into the front side of the jigs and the jigs are slotted as at 8 for the reception of cutters or blades 9 of the form more clearly shown in Figs. 5 and 6, therebeing left a relatively thin wall of metal 10 at the bottom ofthe slot Sthat admits of a slight flexing so that the blades may be easily inserted into the slots and will bolts are expanded or screwed outwardly against the wall of the recess 2 in the head in which the jig is inserted.

The slots 8 are preferably cut entirely through the at the ends thereof as indicated at 11, Fig. 5, and the ends of the blades are provided with elements 12 that project downwardly into such slots on each side of the wall portion 10 to prevent the blade from moving endwise in the jig before it is clamped therein by the tightening of the stud bolts 7.

The jigs are inserted by sliding them into the recesses from one end thereof and the heads of the stud bolts are rounded so that they will fit snugly within the slots 6 when the stud bolts are screwed outwardly to clamp the jigs.

The top edge of the front portion of the jig 3 forms the chip'break as indicated at 50 so that when suchchip break becomes Worn it may be renewed by substituting a new jig.

This is a marked advantage over certain forms of heads whereon the chip break is a part of the head itself.

Figs. 7 and 8 illustrate a modified formof jig wherein the knife receiving slot 8 ex: tends entirelythrough the ig for the greater part of its length and the portions of the jig on opposite sides of'theslot ame secured together by small integral meta-l sections or bridges '13 that flex to admit a blade to be clamped in the slots.

14 are screws that extend'cro'sswise of the slot 8 just above the sections 13, see Fig. 8, to prevent the't-Wo parts of the jig on opposite sides o'fthe slot from being spread-apart and the jigs broken.

The knife 15 that fits within this formof jig is recessed as at 16to fit over the'screws let-and metal bridge sections Iii-and may be held in adjusted position within the jig before the latter is insertedin the head by tightening up the screws 14.

Figs. 3 and 4 illustrate a jig composed of three separate sections 17 l8 and 19tha't'are joined together "by a rod "20 that passes through 'each of such sections lengthwise thereof.

The several'sections -17, l8an'd l9 are-each slotted'at the ends thereof for the reception of knives 21 and are further provided with slots 22 that extend lengthwise thereof from the knife receiving slots to a "point near the opposite end of the jig section so that/when the stud screws in the'fron't-of the jig sections are screwed outwardly againstasolid wall'the knives '21 will be securely clamped in the jig sections. V

The combination of knives-"shown in Fig. 3 are the 'ones commonly used'in finishing ceiling lumber but it is obvious that many other combinations of'knives may be set up in this same manner. 7

The jigs shown in Figs. 3 and 4 and in Figs. 11 to 16"inclusive are eachprovided withintegral toe pieces23 that do not "inter- -fere with theoperationof the stud bolts and give thebotto'ms of'the jigs a bearing'on the entire bottoms of the recesses,2.

Fig. 9 illustrates'this invention as applied to-a cutter head or matcherhead 'which'consists of a cylindrical disk'25 recessed as at 26 for the reception of'blade'holding jigs27, the disk 25 being relatively narrowand being adapted to bemounted for'rotation in a vertical plane and'the jigs 27 being of a suitable length -to fit within "the recesses in the disk-25. v V

The blade receiving slots 28 in thejigs'27 do not extend entirely therethrough but leave a relatively'thin wall of metalbetween the bottom of the slot and thebottomof'the jig whichv flexes and permits the blade to be securely clamped as the stud bolts are screwed outwardly against the walls 'ot'the recesses in the head.

Fig. 12 illustrates the top edges of a jig 27 recessed asat 28 to facilitate the removal and insertion of blades.

29 are screws that are inserted in one end of each jig 27 in such manner that the head of the screw will overhang the bottom side of the jig and thereby be caused to engage with the :face ofthe cutter head and serve as a stop for the jig when it is inserted in the head.

Fig-I3 shows a form of knife and jig 3O that may -be useclfor finishingthe edge of ship lap lumber. This 1 jig is substantially the s'aune as the jig 27 exceptthat-the top -edge thereo'f is out away for about half its length, as indicated at 31.

Fig. 14 i'llustrates a jig 32 and'blade 83 for iorrning the tongue on floor-ing the top edge 'of the jig being recessed-as at34 and the knife being recessed as at 35.

Fig. 15 illustrates a jig'36 recessedon one end as atf37 'for holding a groove cutting knife '38. The edges of the knife 38 are beveled to fit the beveled-sides of-the re'eess 37 as "indicated at-39 so that the knife w illnot easily' slip-out of the rec'ess'and the jig-is pro- *vided with' a slot that extends -from the recess 37 to a. point near the opposite "end of head25 the knide 38 will be-securely clamped in-the Fi'g "-16 illustrates form-ofjig 40' similar to the jig 36 except that it has two-tongue forming knives rigidly secured therein.

It 'is obvious that unanybther forms of knives 1n ay'be used in the various jigs herein shown and "described, "but "it is thought that this'disclos'ure illustrates the invention thorouglily.

"The-'o'peration of the device is'is very sim .ple. T-he-knives are "first placed in :thej-igs, the jigs are then inserted into" the recesses in "the heads from'oneend thereof and the stud structionof the various parts of this device may be resorted to without departing "from the spirit of the lnvention or sacrificing any of its advantages.

What I claim and desire to protect by Letters Patent is 1. The combination with a cutter head havingper pheral recesses extending lengthwise thereof, the rear wallsof said recesses being inclined forwardly at an acute angle "to'i'the bottom wallsthereof, of blade -"clampvided with forwardly inclined blade receiving slots, said jigs having front walls at right angles to the bottom walls thereof and forwardly inclined rear walls at an acute angle to the said bottom walls thereof, toe-r pieces on said jigs. adjacent the bottoms thereof, and stud bolts carried by said jigs in said recesses adapted to be screwed outwardly to clamp said jigs within said cutter head recesses.

2. A device of the class described comprising a cylindrical head having peripheral recesses extending lengthwise thereof, the rear walls of said recesses being inclined'for- Wardly at an acute angle to the bottom walls thereof, blade clamping jigs fitted within said recesses and having forwardly inclined rear walls, said blade clamping jigs having forwardly inclined slots for the reception of blades, said slots extending through the greater part of said jigs whereby a narrow wall of metal is left at the bottoms of said slots to join the two sides of said jigs so as to permit said sides to be clamped tightly against said blades, and stud bolts carried by said jigs in said recesses adapted to be screwed outwardly to clamp said j igs within said recesses and said blades within said inclined slots of the jigs.

Signed by me at Seattle, Washington, this 1 1 day of June, 1917.

JOHN HEGGEN.

lrVitnesses E. B. HERALD, R. J. 0001:.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

